Document xzKvLqGJJMV7ovGyN7MDyQzQJ

American Society of Heating and Ventilating Engineers Guide, 1924-25 TABLE 72. RECIPROCATING VACUUM PUMPS--Continued Cross Capacity in Gallons of Pump Cylinders per Foot Piston Speed DtA. Cylinder IN. 2 3' M 3'A 3Vi 4 4M m. 5 5K SH SH 6 6H Gal. per Foot G .1632 .2550 .3672 .4309 .4998 .5738 .6528 .7369 .8263 .9206 1.020 1.125 1.234 1.349 1.469 1.594 Dia. Cylinder IN. Gal. per Foot G 6'A ' m 7 m m m 8 m 9 9'A 10 10H li. liH 12 12H 1.724 1.859 1.999 2.145 2.295 2.450 2.611 2.948 3.305 3.682 4.080 4.498 4.937 5.396 5.875 6.375 Dia. Cylinder In. Gal. per Foot G 13 13A 14 im 15 15H 16 17 18 19 20 21 22 23 24 25 6.895 7.436 7.996 8.578 9.180 9.801 10.44 11.79 13.32 14.73 16.32 17.99 19.75 21.58 23.50 25.50 Empirical Formula G X 5 X W = capacity sq. ft. direct radiation G -- capacity water cylinder in gal. per ft. length. 5 = piston speed in ft. per min. W = constant--105 for 6 in. and less--120 for over 6-in. cylinder Altitude TABLE 73. PUMP DATA Barometric Pressure Equivalent Head of Practical Suction Water in Ft. Lift Sea level \i mile above H" %" l " l Ya. " " 2l'A " 14.70 14.02 lb. " tUo sq.U in. 33.33 " u u 12.66 " u a 12.02 " u a 11.42 " a u 10.88 " u u 9.88 " 33.95 32.38 30.79 29.24 27.76 26.38 25.13 22.82 22' 2V 20' 18' 17' 16' 15' 14' Suction'lift'of PUMPS WITH BAROMETRIC PRES SURE AT DIFFERENT ALTI TUDES AND EQUIVALENT HEAD OF WATER IN FEET. American Society of Heating and Ventilating Engineers Guide, 1924-25 TABLE ii. ' PROPERTIES OF SATURATED STEAM Vacuum in in. of Mercury or Gage Pressure in LB. Absolute Pressure' in LB. PER SQ. IN. Temperature in deg. Fahr. Total Heat above 32 DEG- FAHR. B.t.u. in the' B.t.u. in the Water Steam Latent Heat of the Steam : iNi B.t.u. Volume in cu. ft. of 1 LB. OF Steam 27.88 25.85 23.81 21.78 19.74 17.70 15.67 13.63 11.60 9.56 7.52 5.49 3.45 1.42 0.00 0.3 1.3 2.3 3.3 4.3 5.3 6.3 7.3 8.3 9.3 10.3 15.3 20.3 25.3 31.3 35.3 41.3 45.3 51.3 61.3 71.3 81.3 90.3 100.3 125.3 140.3 150.3 165.3 -175.3 200.3 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 14.70 15. 16. - 17. 18. 19. 20. 21. 22. 23. 24. 25. 30. 35. 40. 46. 50. , 56. 60. 66. 76. 86. 96. 105. 115. 140. 155. 165. 180. 190. 215. 101.83 126.15 . 141.52 153.01 162.28 170.06 176.85 182,86 188.27 193.22 197.75 201.96 205.87 209.55 212.00 , 213.00 216.3 219.4222.4 225.2 228.0 230.6 233.1 235.5 237.8 240.1 250.3 259.3 267.3 275.8 281.0 288.2 292.7 299.0 308.5 317.1 324.9 331.4 338.1 353.1 361.1 366.1 373.1 377.6 388.0 69.8 94.0 109.4 120.9 130.1 137.9 144.7 150.8 156.2 161.1 165.7 169.9 173.8 177.5 180.0 181.0 184.4 187.5 190.5 193.4 196.1 198.8 201.3 203.8 206.1 208.4 218.8 227.3 236.1 244.8 250.1 257.5 262.1 268.5 278.3 287.2 295.3 302.0 309.0 324.6 332.9 338.2 345.6 350.4 361.4 1104.4 1115.0 1121.6 1126.5 1130:5 : 1 1034.6 ; 1021.0 : 1012.3 1005.7 1000.3 : 33.0 \ 173.5 : 118.5 90.5 73.33 1133.7 1136.5 1139.0 1141.1 1143.1 995.8 991.8 988.2 985.0 982.0 61.89 53.56 47.27 42.36 5 38.38 1144.9 1146.5 1148.0 1149.4 1150.4 1150.7 1152.0 1153.1 1154.2 1155.2 1156.2 1157.1 1158.0 1158.8 1159.6 1160.4 1163.9 1166.8 1169.4 1172.0 1173.6 1175.7 1177.0 1178.8 1181.4 1183.6 1185.6 1187.2 1188.8 1192.2 979.2 976.6 974.2 971.9 970.4 969.7 967.6 965.6 963.7 961.8 960.0 958.3 956.7 955.1 : 953.5 952.0 945.1 938.9 933.3 927.2 923.5 918.2 914.9 910.2 903.0 896.4 890.3 885.2 879.8 867.6 35.10 32.36 30.03 28.02 26.79 26.27 24.79 23.38 22.16 21.07 20.08 19.18 18.37 17.62 16.93 16.30 13.74 11.89 10.49 9.20 8.51 7.65 7.17 6.56 5.74 5.10 4.60 4.23 3.88 3.219 1194.0 1195.0 1196.4 1197.3 1199.2 861.0 856.8 850.8 846.9 837.9 2.920 2.753 2.533 2.406 2.138 91